EP4057302A1 - Zweistufige proportionale hochspannungsstandardvorrichtung mit magnetischer erregung und fehlerkompensationsverfahren - Google Patents

Zweistufige proportionale hochspannungsstandardvorrichtung mit magnetischer erregung und fehlerkompensationsverfahren Download PDF

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Publication number
EP4057302A1
EP4057302A1 EP19951933.1A EP19951933A EP4057302A1 EP 4057302 A1 EP4057302 A1 EP 4057302A1 EP 19951933 A EP19951933 A EP 19951933A EP 4057302 A1 EP4057302 A1 EP 4057302A1
Authority
EP
European Patent Office
Prior art keywords
stage
winding
iron core
dual
excitation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19951933.1A
Other languages
English (en)
French (fr)
Other versions
EP4057302A4 (de
Inventor
Feng Zhou
Hao Liu
Min LEI
Xiaodong YIN
Chunyang JIANG
Jianping Yuan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI filed Critical State Grid Corp of China SGCC
Publication of EP4057302A1 publication Critical patent/EP4057302A1/de
Publication of EP4057302A4 publication Critical patent/EP4057302A4/de
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/24—Voltage transformers
    • H01F38/26—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2895—Windings disposed upon ring cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F2003/106—Magnetic circuits using combinations of different magnetic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented

Definitions

  • FIG. 1 is a cross-sectional diagram of a dual-stage excitation high-voltage ratio standard apparatus according to an embodiment of the present application.
  • the standard apparatus provided by the present application is described in detail below in conjunction with FIG. 1 .
  • the dual-stage excitation high-voltage ratio standard apparatus includes a first-stage iron core C1, a second-stage iron core C2, a proportional winding N 1 , a proportional winding N 2 , an excitation winding N 1 e , and an excitation winding N 2 e .
  • Both the first-stage iron core C1 and the second-stage iron core C2 are rectangular rings. As shown in FIG. 1 , a rectangular ring of the first-stage iron core C1 has a greater perimeter than a rectangular ring of the second-stage iron core C2.
  • the first-stage iron core C1 has a larger cross-sectional area than the second-stage iron core C2 as viewed from the A-A direction.
  • a cross section of the first-stage iron core C1 is a circle and a cross section of the second-stage iron core C2 is a rectangle.
  • the second-stage iron core C2 is disposed outside the first-stage iron core C1, and one side of the first-stage iron core C1 is adjacent to one side of the second-stage iron core C2.
  • the number of turns of the excitation winding N 1 e is equal to the number of turns of the proportional winding N 1
  • the number of turns of the excitation winding N 2 e is equal to the number of turns of the proportional winding N 2 .
  • the excitation winding N 1 e and the excitation winding N 2 e have the same winding direction
  • the proportional winding N 1 and the proportional winding N 2 have the same winding direction
  • two sets of excitation windings and two sets of proportional windings have opposite winding directions, where a winding manner is shown in FIG. 2 .
  • the two adjacent sides of the first-stage iron core C1 and the second-stage iron core C2 have the same magnetic flux direction.
  • a proportional winding N 1 and a proportional winding N 2 are wound on the first-stage iron core C1 and the second-stage iron core C2 so that the proportional winding N 1 , the proportional winding N 2 , the first-stage iron core C1, and the second-stage iron core C2 form a second-stage voltage transformer.
  • the excitation winding N 1 e , the excitation winding N 2 e , the proportional winding N 1 , the proportional winding N 2 , the first-stage iron core C1, and the second-stage iron core C2 forms the dual-stage voltage transformer, where the number of turns of the excitation winding N 1 e is equal to the number of turns of the proportional winding N 1 .
  • An equivalent circuit diagram of the traditional dual-stage voltage transformer shown in FIG. 3 is shown in FIG. 4 .
  • Z 2 ′ and U 2 ′ in FIG. 4 respectively denote secondary impedance and a secondary induced voltage which are converted to a primary side.
  • the excitation winding and the proportional winding have the opposite winding directions so that the two adjacent sides of the first-stage iron core C1 and the second-stage iron core C2 have the same magnetic flux direction.
  • An embodiment of the present application provides an error compensation method for a dual-stage excitation high-voltage ratio standard apparatus. As shown in FIG. 6 , the method includes steps described below.
  • step S102 an error of the dual-stage excitation high-voltage ratio standard apparatus to be compensated is compensated for by using the error compensation amount.
  • the low-voltage transformer is used for performing the secondary compensation for the dual-stage excitation high-voltage ratio standard apparatus.
  • An error compensation circuit diagram is shown in FIG. 7 , where P f is the compensation low-voltage transformer, and N 4 is a compensation winding (the number of turns is generally 1) of the dual-stage voltage transformer P 0 .
  • An error compensation vector diagram is shown in FIG. 8 .
  • the accuracy level of the dual-stage excitation high-voltage ratio standard apparatus under the voltage level of 500 / 3 kV provided by the present application is 0.002, which is one class higher than the accuracy level (0.005) of the current national highest standard apparatus under the voltage level of 500 / 3 kV.
  • the overall dual-stage error of the dual-stage excitation high-voltage ratio standard apparatus is a negative value of the product of the first-stage error (an error of the first-stage voltage transformer) and the second-stage error (an error of the second-stage voltage transformer).
  • Internal impedance of the second-stage voltage transformer is equivalent to internal impedance of the first-stage voltage transformer.
  • the dual-stage excitation high-voltage ratio standard apparatus can be used as a power frequency voltage ratio standard instrument of a high accuracy level.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Transformers For Measuring Instruments (AREA)
EP19951933.1A 2019-11-05 2019-12-11 Zweistufige proportionale hochspannungsstandardvorrichtung mit magnetischer erregung und fehlerkompensationsverfahren Pending EP4057302A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911070684.1A CN110993273B (zh) 2019-11-05 2019-11-05 一种双级励磁高电压比例标准装置及误差补偿方法
PCT/CN2019/124576 WO2021088200A1 (zh) 2019-11-05 2019-12-11 双级励磁高电压比例标准装置及误差补偿方法

Publications (2)

Publication Number Publication Date
EP4057302A1 true EP4057302A1 (de) 2022-09-14
EP4057302A4 EP4057302A4 (de) 2024-01-03

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EP19951933.1A Pending EP4057302A4 (de) 2019-11-05 2019-12-11 Zweistufige proportionale hochspannungsstandardvorrichtung mit magnetischer erregung und fehlerkompensationsverfahren

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Country Link
EP (1) EP4057302A4 (de)
CN (1) CN110993273B (de)
WO (1) WO2021088200A1 (de)

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Publication number Priority date Publication date Assignee Title
CN112103060B (zh) * 2020-08-07 2022-07-01 中国电力科学研究院有限公司 多级励磁高电压比例标准装置
CN114300244B (zh) * 2022-01-06 2023-12-19 北京东方计量测试研究所 双级误差补偿scott变压装置
CN115966387A (zh) * 2022-04-15 2023-04-14 中国电力科学研究院有限公司 一种全中压双级电压互感器

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CN1004835B (zh) * 1986-05-23 1989-07-19 北京电力科学研究所 电能计量综合误差补偿器
JP2001203112A (ja) * 2000-01-21 2001-07-27 Tabuchi Electric Co Ltd 電磁誘導機器
CN101086917A (zh) * 2006-06-09 2007-12-12 郑州大学 电压互感器及二次回路压降误差的补偿方法及补偿装置
CN202110934U (zh) * 2011-05-11 2012-01-11 广东电网公司电力科学研究院 一种用圆筒线圈绕制的双级电压互感器
CN102360857B (zh) * 2011-05-30 2013-01-16 国网电力科学研究院 一种带误差补偿互感器的一体化配网变压器
KR101798689B1 (ko) * 2013-12-05 2017-11-16 엘에스산전 주식회사 계기용 변류기를 포함하는 전원 장치 및 계기용 변류기의 보상 방법
CN106328349B (zh) * 2016-09-23 2018-02-02 国网江西省电力公司电力科学研究院 一种双二次绕组双级电压互感器
CN107424814B (zh) * 2017-07-27 2020-02-07 中国电力科学研究院 一种高低压混合励磁双级电压互感器及其校准方法
CN109065343A (zh) * 2018-07-10 2018-12-21 中国电力科学研究院有限公司 一种高压双级电压互感器
CN109212293B (zh) * 2018-10-18 2021-04-02 中国电力科学研究院有限公司 一种具有电压计量功能的供电型电压互感器及使用方法

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EP4057302A4 (de) 2024-01-03
CN110993273A (zh) 2020-04-10
CN110993273B (zh) 2022-04-15
WO2021088200A1 (zh) 2021-05-14

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